Research Article

Study on Ultrasonic Characteristics and Prediction of Rock with Different Pore Sizes

Figure 11

Schematic diagram of the acoustic pressure isosurface at 70 μs for different hole size models. (a) 5 mm, (b) 10 mm, (c) 15 mm, (d) 20 mm, (e) 25 mm, and (f) 30 mm.
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